Pierre le grand



(No Model.) 2 Sheets-Sheet 1.

- P. LE GRAND. MACHINE FOR MAKING FELT.

No. 470,496. Patented Marl8, 1892.

Fag. 1.

" o o o o o L55 7. h \y V 0 If G lilllllllll I I n 1 p 05L & Mb 00Wb'bwmeaz' v 2 Sheets-Sheet 2.

(No Model.)

P. LE GRAND. MACHINE FOR MAKING FELT.

Patented Mar. 8, 1892.

172/ zre 22/ 2307"."

we mums vmas w, Momma, wunmcmw, o. c.

UNITED STATES PATENT OFFICE.

PIERRE LE GRAND,

or PARIS,FRANCE.

MACHINE FOR MAKING FELT.

SPECIFICATION forming part of Letters Patent No. 470,496, dated March 8,1892.

' Application filed September 2, 1891. Serial No. 404,487. (No model.)

T0 or whom it may concern:

Be it known that I, PIERRE LE GRAND, a citizen of the French Republic,and a resident of Paris, in said Republic, have invented'certain new anduseful Improvements in Machines for Making Felt, of which the followingis a full, clear, and exact description.

Stiff unwoven felts are obtained by effecting a first operation calledfelting, which consists in mixing the wool threads or other felt hairsone with the other to form a sheet. When this sheet is sufficientlydense to support the treatment of the fuller without altering, theoperation of fulling is proceeded with, which has the purpose ofrendering the primitive sheet more or less compact and solid, accordingto the quality desired.

The machine which is the subject of the present specification does awaywith all the abuses of these operations, working more rapidly and betterthan could be done by hand.

In the accompanying drawings, Figure 1 is a View or the machine inlongitudinal vertical section. Fig. 2 is a plan view of the samemachine. Fig. 3 isa detail view of the machine.

The same letters of reference represent the same parts in the severalfigures.

In this machine the felting is done by damp beating of the wool threadsand felt hairs jointly with a heating up and continuous friction, andfor this purpose the machine has at its lower part a water-reservoir.which is constantly kept at a high temperature to obtain steam or a hotbath. Above this reser'voir are arranged a certain number of superposedrollers G, receiving a rotary movement from any transmission system, andon which pass with a suitable tension endless carrying-cloths made ofwire-netting c, covered with a linen cloth 0', as shown in Fig. 5 of thedrawings. On each metal cloth is arranged a series of cylinders orrollers d, mounted on carriages f, receiving a forward and backwardmovement by means of the elbowshafts g and the rods h h. Thisarrangement is repeated any number of times by putting the rollers G intiers, as shown by the drawings. The felt rolled on the roller j isdrawn between the endless cloths c c, where it is subjected to theaction of the working cylinders d and comes out at the lower part of themachine, Where it is rolled up in j or in any other suitable place. Toresist the pressure of the Working cylinders, the endless cloths areheld up, where it is necessary, by grates 1), arranged for this purpose.The working cyliinders cl by their alternate forward and backwardmovement rub and heap up the tissue, doing thus the felting. They areeach com posed of an iron tube 70, mounted in any manner on an axle Z.

To avoid all loss of heat and steam, I en- I velop the machine entirelyor in part, according to necessity, with a sheet-iron coat a, in whichapertures n are made for the passage of the felt. The difierent partsare actuated in any suitable manner, according to the arrangement of themachine and the necessities of the work.

The combination, with the lower receptacle, of a series of rollers abovesaid receptacle, endless cloth-covered wire, carrying-cloths passingover the same, a series of rollers mounted on carriages and arranged oneach carrying-cloth, shafts g, and rods h for reciprocating saidcarriages and grates beneath said cloths for supporting the same,substantially as shown and described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

